公开(公告)号：US20060018424A1

公开(公告)日：2006-01-26

申请号：US11169913

申请日：2005-06-30

申请人： Herbert Bruder ,  Thomas Flohr ,  Ernst Klotz ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Ernst Klotz ,  Karl Stierstorfer

IPC分类号： A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： A61B6/032 ,  A61B5/1075 ,  A61B6/027 ,  A61B6/4085 ,  A61B6/461 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612

摘要： A method is disclosed for a multislice computer assisted tomograph, capable of carrying out a spiral scan of an object volume with a pitch p selected to be small enough that each slice of the object volume is multiply detected during the spiral scan. The method includes calculating, using measured data of two temporally consecutive at least one of revolutions and half revolutions, an image of the object volume from which a change inside the object volume between the two temporally consecutive at least one of revolutions and half revolutions is directly visible. An embodiment of the method can permit, for example, the detection and visualization of dynamic processes with an enhanced time resolution.

摘要翻译： 公开了一种用于多层计算机辅助断层摄影机的方法，其能够对所选择的节距p的物体体积进行螺旋扫描，所述间距p被选择为足够小，使得在螺旋扫描期间对对象体积的每个切片进行乘法检测。 该方法包括使用两个时间上连续的至少一个旋转和半圈的测量数据来计算在两个时间上连续的至少一个转和半转之间的对象体积内的变化直接从该物体体积的图像 可见。 该方法的实施例可以允许例如具有增强的时间分辨率的动态过程的检测和可视化。

公开(公告)号：US20050175141A1

公开(公告)日：2005-08-11

申请号：US11038090

申请日：2005-01-21

申请人： Herbert Bruder ,  Thomas Flohr ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Karl Stierstorfer

IPC分类号： A61B6/03 ,  A61B6/00 ,  B32B27/32 ,  G06T1/00 ,  G06T11/00 ,  G21K1/12 ,  G01N23/00 ,  H05G1/60

CPC分类号： G06T11/006 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/503 ,  A61B6/541 ,  B32B27/32 ,  G06T2211/412 ,  G06T2211/421

摘要： A method and a computed tomograph produce CT images of high resolution by circular scanning of a moving object by scanning sub-segments in a number of successive rest phases of an object under examination, and by respectively reconstructing and reformatting the sub-segments in order subsequently to add up a number of tomograms of the sub-segments. The sum of the sub-segments as a whole reproduce a complementary half segment of a circuit of the focus about the examination object. The moving object is thereby completely scanned, without lateral movement, by the beam being used.

摘要翻译： 一种方法和计算机断层摄影仪通过扫描运动物体的循环扫描来产生高分辨率的CT图像，通过扫描被检查物体的多个连续的休息阶段中的子段，并且随后分别重构和重新格式化子段 将各个分段的断层图相加。 子段的总和作为一个整体再现了关于检查对象的焦点的电路的互补半部分。 因此，通过所使用的梁完全扫描移动物体，而不会横向运动。

公开(公告)号：US08553962B2

公开(公告)日：2013-10-08

申请号：US13164796

申请日：2011-06-21

申请人： Thomas Allmendinger ,  Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach ,  Harald Schöndube ,  Karl Stierstorfer

发明人： Thomas Allmendinger ,  Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach ,  Harald Schöndube ,  Karl Stierstorfer

IPC分类号： G06K9/00 ,  A61B6/00

CPC分类号： A61B6/032 ,  A61B6/4441 ,  A61B6/481 ,  A61B6/486 ,  A61B6/503 ,  A61B6/507 ,  A61B6/5211 ,  A61B6/5264 ,  A61B6/5288 ,  A61B2090/3762 ,  G06T5/002 ,  G06T5/50 ,  G06T11/006 ,  G06T2207/10081 ,  G06T2207/20221 ,  G06T2207/30048 ,  G06T2211/412 ,  G06T2211/436

摘要： A method is disclosed for the reconstruction of picture data of a moving object under examination from measurement, with the measurement data having been recorded beforehand for a relative rotational movement between a radiation source of a computed tomography system and the object under examination. In at least one embodiment, first picture data is computed from a complete measurement dataset of the measurement data for a picture reconstruction, and second picture data is computed from an incomplete measurement dataset for a computed tomography picture reconstruction. The first picture data and the second picture data are combined into third picture data, with the combination being computed using location-dependent movement information of the object under examination.

摘要翻译： 公开了一种用于重建从测量中检查的移动物体的图像数据的方法，其中测量数据已被预先记录在计算机断层摄影系统的辐射源和被检查物体之间的相对旋转运动。 在至少一个实施例中，从用于图像重建的测量数据的完整测量数据集计算第一图像数据，并且从用于计算机断层摄影图像重建的不完整测量数据集计算第二图像数据。 将第一图像数据和第二图像数据组合成第三图像数据，使用正在检查的对象的位置相关运动信息来计算组合。

公开(公告)号：US20110188723A1

公开(公告)日：2011-08-04

申请号：US13018724

申请日：2011-02-01

申请人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach ,  Karl Stierstorfer

IPC分类号： G06K9/00

CPC分类号： A61B6/4014 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4441 ,  A61B6/482 ,  A61B6/507 ,  G01N23/046 ,  G01N2223/401 ,  G01N2223/419 ,  G01N2223/612 ,  G06T11/006 ,  G06T2211/432

摘要： A method is disclosed for reconstructing image data of an examination subject from measured data, wherein the measured data was acquired in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination subject. A limited area between the radiation source and a detector represents a field of view in respect of which measured data can be acquired, and parts of the examination subject were located at least temporarily outside the field of view in the course of the measured data acquisition. In at least one embodiment, first image data is reconstructed from the measured data, and a boundary of the examination subject is determined with the aid of the first image data. The first image data is subsequently modified using the determined boundary, and projection data is calculated from the modified first image data. The measured data is modified using the projection data, and finally second image data is reconstructed from the modified measured data.

摘要翻译： 公开了一种用于从测量数据重建检查对象的图像数据的方法，其中在计算机断层摄影系统的辐射源与检查对象之间的相对旋转运动的过程中获取测量数据。 辐射源和检测器之间的有限区域表示可以获取测量数据的视野，并且在测量数据采集的过程中检查对象的部分至少临时定位在视场外。 在至少一个实施例中，从测量数据重建第一图像数据，借助于第一图像数据确定检查对象的边界。 随后使用所确定的边界修改第一图像数据，并且从修改的第一图像数据计算投影数据。 使用投影数据修改测量数据，最后从修改的测量数据重建第二图像数据。

公开(公告)号：US20110033097A1

公开(公告)日：2011-02-10

申请号：US12849082

申请日：2010-08-03

申请人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Rainer Raupach ,  Karl Stierstorfer

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B5/0456 ,  A61B6/4014 ,  A61B6/482 ,  A61B6/503 ,  A61B6/507 ,  G06T11/006 ,  G06T2211/412 ,  G06T2211/424 ,  G06T2211/436

摘要： A method is disclosed for reconstructing image data of a moving examination object from measurement data, wherein the measurement data was captured in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination object. In at least one embodiment of the method, a first image of the examination object is calculated from a complete measurement data record of the measurement data for an image reconstruction and a second image of the examination object is calculated from an incomplete measurement data record of the measurement data for an image reconstruction. Frequency splitting of the first and second images takes place respectively in at least one low-frequency and one higher-frequency component and the image data of the second image is supplemented in the low-frequency component with image data of the low-frequency component of the first image. In a further processing step the second image thus supplemented is improved using the first image, in that errors due to the incompleteness of the measurement data record of the second image are reduced.

摘要翻译： 公开了一种用于从测量数据重建运动检查对象的图像数据的方法，其中在计算机断层摄影系统的辐射源和检查对象之间的相对旋转运动的过程中捕获测量数据。 在该方法的至少一个实施例中，根据用于图像重构的测量数据的完整测量数据记录来计算检查对象的第一图像，并且从不完整的测量数据记录计算检查对象的第二图像 用于图像重建的测量数据。 第一和第二图像的频率分割分别发生在至少一个低频和一个较高频分量中，并且第二图像的图像数据在低频分量中被补充，低频分量的图像数据是 第一张图片。 在另外的处理步骤中，使用第一图像来改善如此补充的第二图像，因为减少了由于第二图像的测量数据记录的不完备性造成的错误。

公开(公告)号：US07505553B2

公开(公告)日：2009-03-17

申请号：US11100445

申请日：2005-04-07

申请人： Herbert Bruder ,  Thomas Flohr ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Karl Stierstorfer

IPC分类号： A61B6/03

CPC分类号： G06T11/005 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4028 ,  A61B6/4085 ,  G01N23/046 ,  G01N2223/419

摘要： A method is for taking computed tomography scans with the aid of a CT unit and to a CT unit. An X-ray tube is moved in a circle or spiral about a z-axis in combination with a detector situated opposite and an object is scanned. The X-ray tube includes a jumping focus with two or more different jumping focal positions relative to the X-ray tube. Parallel data records are formed from the detector data obtained, and tomograms are reconstructed therefrom. When forming the parallel data records, account is taken of the different position of the respectively current jumping focus in relation to the X-ray tube (=jumping focal position) in the radial direction.

摘要翻译： 一种方法是借助于CT单元和CT单元进行计算机断层扫描。 X射线管与围绕z轴的圆形或螺旋形组合移动，与检测器相结合并且物体被扫描。 X射线管包括相对于X射线管具有两个或多个不同跳跃焦点位置的跳跃焦点。 从获得的检测器数据形成并行数据记录，并从其重构断层图像。 在形成并行数据记录时，考虑到相对于X射线管（=跳跃焦点位置）在径向上的分别当前跳跃焦点的不同位置。

公开(公告)号：US07440598B2

公开(公告)日：2008-10-21

申请号：US10235584

申请日：2002-09-05

申请人： Herbert Bruder ,  Thomas Flohr ,  Otto Sembritzki ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Otto Sembritzki ,  Karl Stierstorfer

IPC分类号： G06K9/00 ,  G06K9/40 ,  H04N5/00 ,  A61B6/00

CPC分类号： G06T11/005 ,  G06T5/002 ,  G06T5/008 ,  G06T2207/10081

摘要： In a method and filter and computer product for adaptive filtering of projection data acquired by a medical diagnostic apparatus, raw data-based filtering of the acquired projection data is undertaken using a filter with a filter kernel having a constant filter width, and the filtered projection data are mixed with the acquired projection data with a fixing of the respective quantitative relationships of filtered projection data to acquired projection data ensuing dependent on respective subsets of the acquired projection data.

摘要翻译： 在用于由医疗诊断装置获取的投影数据的自适应滤波的方法和滤波器和计算机产品中，使用具有恒定滤波器宽度的滤波器核的滤波器进行所获取的投影数据的基于原始数据的滤波，并且滤波投影 将数据与所获取的投影数据混合，并将取决于所获取的投影数据的各个子集的滤波后的投影数据的各自的定量关系固定为所获取的投影数据。

公开(公告)号：US07215805B2

公开(公告)日：2007-05-08

申请号：US10074145

申请日：2002-02-12

申请人： Herbert Bruder ,  Thomas Flohr ,  Marc Kachelriess ,  Stefan Schaller ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Marc Kachelriess ,  Stefan Schaller ,  Karl Stierstorfer

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/4085 ,  Y10S378/901

摘要： In a method for computed tomography and a computed tomography apparatus for scanning a subject with a conical ray beam emanating from a focus that detects a matrix-like detector array, the focus is moved relative to the subject on a spiral path around a system axis, and the detector array supplies output data corresponding to the incident radiation, and images having an inclined image plane are reconstructed from output data respectively supplied during the movement of the focus on a spiral segment, the image planes of these images are inclined by an inclination angle γ around a first axis intersecting the system axis at a right angle and also are inclined by a tilt angle δ with respect to the system axis around a second axis that intersects the first axis as well as the system axis at a right angle.

摘要翻译： 在用于计算机断层摄影的方法和用于使用从检测矩阵状检测器阵列的焦点发出的锥形射线束扫描对象的计算机断层摄影装置中，聚焦在围绕系统轴线的螺旋路径上相对于被摄体移动， 并且检测器阵列提供对应于入射辐射的输出数据，并且具有倾斜图像平面的图像从在焦点移动到螺旋段时分别提供的输出数据重建，这些图像的图像平面倾斜倾斜角 围绕与系统轴线成直角相交的第一轴线的伽马，并且相对于围绕与第一轴线相交的第二轴线的系统轴线以及直角的系统轴线倾斜倾斜角度。

公开(公告)号：US07058156B2

公开(公告)日：2006-06-06

申请号：US10686596

申请日：2003-10-17

申请人： Herbert Bruder ,  Thomas Flohr ,  Stefan Schaller ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Stefan Schaller ,  Karl Stierstorfer

IPC分类号： A61B6/03

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/466 ,  G06T11/006 ,  G06T2211/421

摘要： An imaging method is for a multi-slice spiral CT scan with 3D back projection. Use is made, for the reconstruction of the absorption value of at least one voxel, of the measured and filtered data that are produced by rays which penetrate the at least one voxel. A CT unit is further used to carry out the method. In the method, the filtering of the data, required for the reconstruction, in the image of the virtual detector is performed in the direction of the projection of spiral segments imaged thereon which are produced by the spiral scanning over a prescribed angular range. The CT unit includes a device for carrying out directional filtering of this type.

摘要翻译： 一种成像方法是用于具有3D背投影的多层螺旋CT扫描。 对于通过穿透至少一个体素的射线产生的测量和滤波的数据，用于重构至少一个体素的吸收值。 进一步使用CT单元执行该方法。 在该方法中，在虚拟检测器的图像中对在虚拟检测器的图像中进行重建所需要的数据的滤波是在其上成像的螺旋段的投影方向上执行的，这些螺旋段是通过螺旋扫描在规定的角度范围内产生的。 CT单元包括用于执行这种类型的方向滤波的装置。

公开(公告)号：US07020234B2

公开(公告)日：2006-03-28

申请号：US11042444

申请日：2005-01-26

申请人： Herbert Bruder ,  Thomas Flohr ,  Karl Stierstorfer

发明人： Herbert Bruder ,  Thomas Flohr ,  Karl Stierstorfer

IPC分类号： A61B6/03 ,  H05G1/10

CPC分类号： G06T11/005 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4447 ,  G06T2211/412

摘要： A method is for improving CT image data from a moving examination object, in particular a beating heart. The method includes moving a focus on a circular track about the examination object, wherein scanning data streams, measured in parallel and in a fashion correlated with one another, are collected from a multirow detector. Further, movement data of the examination object are also collected. Angularly complementary data record elements of the same movement phase are retrospectively selected from a number of movement cycles. The data record elements are then reconstructed and reformatted to form incomplete CT images. Subsequently, the incomplete CT images are added up to form complete CT images.

摘要翻译： 一种用于改善运动检查对象，特别是跳动心脏的CT图像数据的方法。 该方法包括将关于检查对象的圆形轨迹上的焦点移动，其中从多重检测器收集并行测量并以彼此相关的方式测量的扫描数据流。 此外，还收集检查对象的移动数据。 从多个移动周期追溯地选择相同移动阶段的角度互补的数据记录元素。 然后重建数据记录元素并重新格式化以形成不完整的CT图像。 随后，将不完整的CT图像相加，形成完整的CT图像。